Native android application development is totally not my community. I admit I have never even heard or kotlin.

Actually, at the coworking space I'm currently streaming the conference at, nobody had heard of kotlin.

edit: AH, Kotlin runs on the java virtual machine. That makes much more sense to me now.

Sorry, that's the context I should have provided! (Knowing that also probably explains why they cut to a shot of the JetBrains CEO in the audience, since Kotlin originated there.)